Developing Chick Embryo Lethal Response to Dose Variation of 2-Ethyl-5-Methylbenzimidazole
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چکیده
منابع مشابه
The Developing Chick Embryo
The RNA-P and DNA-P content of the nucleus and the RNA-P content of the whole cell of the livers of 8to 20-day chick embryos and of adult fowls have been determined. The DNA-P content of the liver nuclei was slightly higher in the 8and 10-day embryo than in all the other stages examined. A significant decrease in the RNA content of the cell occurred during embryonic development. The RNA content...
متن کامل7 2 Vitamin B , , in the developing chick embryo
It is well established that bacteria are the chief source of vitamin BI2, and that higher plants and animals are generally unable to synthesize the vitamin. The work of Woolley (1955) on mammary cancer tissue of the mouse suggests, however, that certain animal tissues may have this ability. It seemed therefore that, by analogy, conditions might be favourable for the synthesis of vitamin B,, in ...
متن کاملThe Lethal Effect of Endotoxins on the Chick Embryo
Inoculation of the CAM of the 10-day chick embryo with endotoxin preparations derived from the meningococcus and other Gram-negative microorganisms has been shown to result in multiple hemorrhages and death of the embryo within a few hours. Evidence has been presented to indicate that this lethal effect is specific for the general class of endotoxins derived from Gram-negative bacteria. Suscept...
متن کاملGlutamic dehydrogenase in the developing chick embryo.
1. The behaviour of serum albumin and yglobulin labelled with 131I has been investigated in the isolated perfused rat liver. 2. Such a liver has been found capable of preferentially removing and then breaking down very small proportions of altered protein molecules present in preparations of plasma proteins isolated by the usual methods. The proportions of such altered molecules actually presen...
متن کاملNiacin biosynthesis in the developing chick embryo.
In 1945, Krehl et al. (1) observed that tryptophan and nicotinic acid were mutually interchangeable, within limits, in supporting the growth of rats. Since that time considerable evidence has accumulated which demonstrates the biosynthesis of niacin from tryptophan in the rat and other animals. Studies with Neurospora and mammals have demonstrated that the pathway from tryptophan goes through k...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1961
ISSN: 0032-5791
DOI: 10.3382/ps.0400003